Enhance pull request template with new sections

Updated the pull request template to include additional sections for changes and related links.

Author: CodeShellDev

.github/PULL_REQUEST_TEMPLATE.md

@@ -1,9 +1,19 @@
 ### Summary
+<!--
 Describe what this PR does.
+-->
 
 ### Changes
-* List major changes
+<!--
+List of all changes below.
+-->
+* list of changes
 
 ### Checklist
 - [ ] PR tested
 - [ ] Docs updated (if applicable)
+
+### Related
+- Docs PR: 
+- Code PR: 
+- Issues: